Update:
Images appear to be the same. The 2020 shown as a Box set and listed as Panini Super Bowl LV Champions The 2021 is listed as Panini Instant Super Bowl LV Champions
Copy rights are both 2021 but about shows 2020 Panini Instant Football above the copy right
The 2020 Panini Super Bowl LIV Champion Box set was Cancelled and put under 2019 Panini Instant NFL
Appears to me the 2020 Panini Super Bowl LV Champions need to be removed or were they released as a box set and weeky. but the same cards.
freakizon purcahsed it as a box set.